Alarm Display: A.b31 A.b32 A.b33. Alarm Name: Current Detection Error 1/2/3 on Sony SI-F209 Electronic Part Mounter

Troubleshooting Summary:

Having issues with Alarm Display: A.b31 A.b32 A.b33. Alarm Name: Current Detection Error 1/2/3 on Sony SI-F209 Electronic Part Mounter? Read our step-by-step SMT maintenance solution below. If you require replacement feeders, nozzles, or sensors, contact SMTBOX for OEM-compatible parts.

Alarm Display: A.b31 A.b32 A.b33

Alarm Name: Current Detection Error 1/2/3

Situation at Alarm Occurrence: Occurred when the control power supply was turned ON or during operation.

Cause: The current detection circuit for the Phase U is faulty. The current detection circuit for the Phase V is faulty.
Corrective Actions: Replace the SERVOPACK.

Cause: The detection circuit for the power supply is faulty.
Corrective Actions: Replace the SERVOPACK.

Cause: The servomotor cable is disconnected.
Corrective Actions: Check the motor wiring.

SMTBOX Editorial & Engineering Team
Written by: SMTBOX Editorial & Engineering Team

Our editorial team consists of senior SREs, mechanical engineers, and SMT assembly specialists with over 15 years of industry experience in PCB assembly line optimization. All technical articles are reviewed and verified for mechanical and electronic compatibility before publication.

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